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Finding the Fourth Proportional to 863,663.40, 1,191,470.04 and 500,877

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Solution

The fourth proportional to 863,663.40, 1,191,470.04 and 500,877 is: 690,986.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,663.40 : 1,191,470.04 = 500,877 : x
  2. Step 2: Convert to fraction form
    863,663.40/1,191,470.04 = 500,877/x
  3. Step 3: Cross multiply
    863,663.40x = 1,191,470.04 × 500,877
  4. Step 4: Simplify right side
    863,663.40x = 596,779,939,225.08
  5. Step 5: Solve for x
    x = 596,779,939,225.08/863,663.40
  6. Step 6: Final answer
    x = 690,986.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.